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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_CHROMEOS_INPUT_METHOD_CANDIDATE_WINDOW_CONTROLLER_IMPL_H_
#define CHROME_BROWSER_CHROMEOS_INPUT_METHOD_CANDIDATE_WINDOW_CONTROLLER_IMPL_H_
#include "chrome/browser/chromeos/input_method/candidate_window_controller.h"
#include "base/memory/scoped_ptr.h"
#include "base/observer_list.h"
#include "chrome/browser/chromeos/input_method/candidate_window_view.h"
#include "chrome/browser/chromeos/input_method/ibus_controller.h"
#include "chrome/browser/chromeos/input_method/infolist_window_view.h"
#include "chromeos/dbus/ibus/ibus_panel_service.h"
#include "chromeos/ime/ibus_daemon_controller.h"
namespace views {
class Widget;
} // namespace views
namespace chromeos {
class IBusLookupTable;
namespace input_method {
class DelayableWidget;
// The implementation of CandidateWindowController.
// CandidateWindowController controls the CandidateWindow.
class CandidateWindowControllerImpl
: public CandidateWindowController,
public CandidateWindowView::Observer,
public IBusPanelCandidateWindowHandlerInterface,
public IBusDaemonController::Observer {
public:
CandidateWindowControllerImpl();
virtual ~CandidateWindowControllerImpl();
// CandidateWindowController overrides:
virtual bool Init(IBusController* controller) OVERRIDE;
virtual void Shutdown(IBusController* controller) OVERRIDE;
virtual void AddObserver(
CandidateWindowController::Observer* observer) OVERRIDE;
virtual void RemoveObserver(
CandidateWindowController::Observer* observer) OVERRIDE;
protected:
// Returns infolist window position. This function handles right or bottom
// position overflow. Usually, infolist window is clipped with right-top of
// candidate window, but the position should be changed based on position
// overflow. If right of infolist window is out of screen, infolist window is
// shown left-top of candidate window. If bottom of infolist window is out of
// screen, infolist window is shown with clipping to bottom of screen.
// Infolist window does not overflow top and left direction.
static gfx::Point GetInfolistWindowPosition(
const gfx::Rect& candidate_window_rect,
const gfx::Rect& screen_rect,
const gfx::Size& infolist_winodw_size);
// Converts |lookup_table| to infolist entries. |focused_index| become
// InfolistWindowView::InvalidFocusIndex if there is no selected entries.
static void ConvertLookupTableToInfolistEntry(
const IBusLookupTable& lookup_table,
std::vector<InfolistWindowView::Entry>* infolist_entries,
size_t* focused_index);
// Returns true if given |new_entries| is different from |old_entries| and
// should update current window.
static bool ShouldUpdateInfolist(
const std::vector<InfolistWindowView::Entry>& old_entries,
size_t old_focused_index,
const std::vector<InfolistWindowView::Entry>& new_entries,
size_t new_focused_index);
private:
// CandidateWindowView::Observer implementation.
virtual void OnCandidateCommitted(int index, int button, int flags) OVERRIDE;
virtual void OnCandidateWindowOpened() OVERRIDE;
virtual void OnCandidateWindowClosed() OVERRIDE;
// Creates the candidate window view.
void CreateView();
// IBusPanelCandidateWindowHandlerInterface overrides.
virtual void HideAuxiliaryText() OVERRIDE;
virtual void HideLookupTable() OVERRIDE;
virtual void HidePreeditText() OVERRIDE;
virtual void SetCursorLocation(const ibus::Rect& cursor_position,
const ibus::Rect& composition_head) OVERRIDE;
virtual void UpdateAuxiliaryText(const std::string& utf8_text,
bool visible) OVERRIDE;
virtual void UpdateLookupTable(const IBusLookupTable& lookup_table,
bool visible) OVERRIDE;
virtual void UpdatePreeditText(const std::string& utf8_text,
unsigned int cursor, bool visible) OVERRIDE;
// IBusDaemonController::Observer override
virtual void OnConnected() OVERRIDE;
virtual void OnDisconnected() OVERRIDE;
// Updates infolist bounds, if current bounds is up-to-date, this function
// does nothing.
void UpdateInfolistBounds();
// The candidate window view.
CandidateWindowView* candidate_window_;
// This is the outer frame of the candidate window view. The frame will
// own |candidate_window_|.
scoped_ptr<views::Widget> frame_;
// This is the outer frame of the infolist window view. The frame will
// own |infolist_window_|.
scoped_ptr<DelayableWidget> infolist_window_;
// The infolist entries and its focused index which currently shown in
// Infolist window.
std::vector<InfolistWindowView::Entry> latest_infolist_entries_;
size_t latest_infolist_focused_index_;
ObserverList<CandidateWindowController::Observer> observers_;
DISALLOW_COPY_AND_ASSIGN(CandidateWindowControllerImpl);
};
#endif // CHROME_BROWSER_CHROMEOS_INPUT_METHOD_CANDIDATE_WINDOW_CONTROLLER_IMPL_H_
} // namespace input_method
} // namespace chromeos
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